On Wed, Jan 24, 2018 at 10:40 AM, Hans Petter Selasky <h...@selasky.org> wrote: > On 01/24/18 19:28, Warner Losh wrote: >> >> Does mallocarray(10 ,1Gb) panic on i386? It does not. It should. > > > Hi, > > If M_WAITOK is specified, then sleep forever and print a message. > Else return NULL ?
Depends on the machine. From malloc.9: > If the multiplication of nmemb and size would cause an integer overflow, the > mallocarray() function induces a panic. 64-bit arch does not experience overflow and will sleep until 10GB is available. (This is why the caller should do a narrower check.) 32-bit panics, since 10 * 1GB overflows 32-bit size_t (== u_long). Best, Conrad _______________________________________________ svn-src-head@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
